Richardson is a city in Dallas and Collin counties in the U.S. state of Texas. As of the 2019 American Community Survey, the city had a total population of 121,323. Richardson is an inner suburb of Dallas. It is home to the University of Texas at Dallas and the Telecom Corridor, with a high concentration of telecommunications companies. More than 5,000 businesses have operations within Richardson's 28 square miles (73 km2), including many of the world's largest telecommunications and networking companies, such as AT&T, Verizon, Cisco Systems, Samsung, ZTE, MetroPCS, Texas Instruments, Qorvo, and Fujitsu. Richardson's largest employment base is provided by the insurance industry, with Blue Cross and Blue Shield of Texas's headquarters, a regional hub for GEICO, regional offices for United Healthcare, and one of State Farm Insurance's three national regional hubs located in the community.

Allen is a city in Collin County, Texas, United States, a northern suburb of Dallas. As of the 2010 United States Census, the city had a total population of 84,246. In 2019, the population of Allen is estimated to be 105,623. Allen is located approximately twenty miles (32.2 km) north of downtown Dallas and is a part of the Dallas–Fort Worth metropolitan area.

Garland is a city in the U.S. state of Texas. It is located northeast of Dallas and is a part of the Dallas–Fort Worth metroplex. It is located almost entirely within Dallas County, except a small portion located in Collin and Rockwall counties. At the 2010 census, the city had a population of 226,876. In 2019, the population rose to 239,928, making it the 93rd-most populous city in the United States of America and the 12th-most populous city in Texas. Garland is second only to the city of Dallas in Dallas County by population and has easy access to downtown Dallas via public transportation including two Dart Blue Line stations and buses.

Addison is an incorporated town in Dallas County, Texas, in the United States. Addison is situated to the immediate north of the city of Dallas. The town's population was 13,056 at the 2010 census. Addison and Flower Mound were the only two Texas municipalities labeled "towns" with a population greater than 10,000 in the 2010 census; since then the municipalities of Prosper and Trophy Club, also identifying as towns, have also exceeded 10,000 in population estimates. Addison is best-known within the Dallas–Fort Worth–Arlington metroplex region for its abundance of restaurants and nightlife.